Glassware forming machine



Sept. 6, 1932.

1.. H. MORIN 1,875,818

GLASSWARE FORMING MACHINE Filed March 22. 1928 4 Sheets-Sheet l Sept. 6,1932. 1.. H. MORIN GLASSWARE FORMING MACHINE Filed March 22. 1928' 4Sheets-Sheet 2 3141mm! 01; M M

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Sept. 6, 1932. 1.. H. MORIN GLASSWARE FORMING MACHINE 4 Sheets-Sheet 3Filed March 22. 1928 Spt.6, 1932. L. H. MORlN 4 1,875,818

GLASSWARE FORMING MACHINE Filed March 22. 19 28 4 Sheets-Sheet 4Patented Scpt..6, 1932 UNITED sr rEs PATEN'EIJ OFFICE LOUIS HORACEIOBIN, OI IONTREAL, QUEBEC, CANADA, ASSIGNOR '10 OWENS-ILLINOIS GLASSCOMPANY, 01 TOLEDO, OHIO, A CORPORATION OF OHIO GLASS WABE FORMINGMACHINE Application fled larch 82, 1928. Serial No. 263,651.

The present invention relates to improvements in glassware formingmachines and more particularly to means for controlling the ipzriods ofapplication of air pressure-during a1 blowing of articles in thefinishing molds.

In commercial production of glassware, such for example as bottles, jarsand the like containers, it is desirable to subject various sized wareto final blowing for periods of time varying in length as determined bythe particular size or type of ware. For example, if a single glasswareforming machine is producing several different sizes or shapes of ware,each requiring a difierent period of application of blowing air, suchrequirement can be met on the average machine only with considerabledifliculty, there generally being no provision made for readilyadjusting the periods of blowing. In commercial production of glassware,a single machine maybe employed to produce several types of ware, butthese several types must necessarily be such that they may be blown totheir final shape without varying the lengths of the periods ofapplication of blowing air thereto. Under these conditions, it is highlyprobable that the largest container of the group being simultaneouslyproduced on a single machine would be subjected to the final blowing fortoo short a period of time, and the smallest bottle of said group wouldbe subjected to blowing air for an unnecessarily long period of time. Inother words, with this single setting controlling the blowing air forall of the mold groups or heads, ideal blowing conditions forsimultaneous production of several different types of ware may not beobtained.

An object of the present invention is to overcome the above objectionsby providing means individual to the several mold groups or headswhereby the periods during which blowing air is applied to the parisonsmay be lengthened or shortened as determined by the size and type ofware being produced.

A further object is to provide means of the above character which may bereadily applied to the commercial machines now in operation withoutextensive structural changes therein. 1

Other objects will'be apparent hereinafter. In the accompanying drawingsFig. 1 is a vertical transverse sectional view, of the upper portion ofa glassware forming machine embodying my invention.

Fig. 2 is a sectional view of one head or mold group embodying myinvention.

Fig. 3 is a fragmentary plan view of the machine with parts in section.

Fig. 4 is a detail sectional elevation illustrating the valve actuatingmechanism.

Fig. 5 is a sectional view taken substantially along the line V-V ofFig. 4.

In the drawings, the machine with which the present invention isassociated is shown as comprising a central stationary pillar 10provided at its upper end with three concentric chambers 11, 12 and 13which communicate through upwardly extending openings with gas, air andvacuum chambers 14, 15 and 16, respectively, in a collar 17 rotativelysupported on the upper end of said pillar. A horizontally disposed;frame 18 is in part carried by the collar or annular frame 17. The moldgroups or heads 60 are in part supported by the frame 18, said groupseach including a blow mold 61 of any preferred or conventional form towhich air pressure is applied at regular intervals by way of a radialair pressure supply pipe 19, said pipe communicatin at its inner endwith the air pressure cham r 15. An elbow 20, which provides connectionbetween said pipe 19 and the interior of the air pressure chamber 15,includes an inwardly opening valve comprising a disk 21 carried by thestem 22, the latter extending upwardly through said elbow and carryingan axially adjustablehead 23 consisting of a washer and nut. A coilspring 24 is interposedbetween the washer and the elbow 20 and encirclesthe upper portion of the valve stem 22 to normally and yieldingly holdthe valve in closed position.

Air pressure is. continuously supplied to the chamber 15 from anysuitable source by way of a pipe 25'leading downwardly into onecompartment of a stationary drum 26 and a branch pipe 27, the lattercommunicating at its upper inner end with an annular chamber 28 which isat all times in communication with the interior of the stationary drum26 by wayof a radial opening 29. Gas

and vacuum may be supplied to the chambers 14 and 16, respectively, fromsuitable sources by way of pipes and 31, respectlvely (Fig. 1).

The mechanism for controlling application of blowing air to thefinishing molds (not shown) by way of the radial pipes 19, includesvalve actuating devices individual to the mold groups or heads. Eachdevice comprises a lever pivoted at its outer lower end to ahorizontally disposed hinge pin 36 extending through spaced bearings 37on a bracket 38. This lower end of the lever 35 is rigidly connected toand may be integrally formed with a counterweight 39 which projectsdownwardly through an opening 40 in the aforementioned horizontal frame18. The counterweight includes a radially outwardly directed finger 41at its upper end, said finger carrying a set screw 42 extendingvertically downwardly through said finger and adapted at times to abutthe upper side of the frame 18. Thus, the angular positions of thecounterweight and lever may at times be controlled. The upper inner endof the lever 35 is formed with a vertical bearing 45 carrying a disk 46on a stem which is adjustable in said bearing 45, said disk adapted tocontact with the adjustable head 23 on the valve stem 22 at regularintervals.

An upwardly extending socket 47 intermediate the ends ofsaid lever 35supports a rod 48 rising upwardly and carrying at its upper end a camroll 49 which is adapted to engage a cam 50 at regular intervals, suchengagement between the cam operating to rock the lever and counterweightabout the hinge pin 36 to thereby move the inner end of the leverdownwardly to unseat the valve disk 21 whereby air pressure may enterthe pipe 19 leading to the mold 61 from the Suppl chamber 15. The lengthof the periods of time during which each valve disk 21 is unseated toadmit air pressure into the pipe 19 is determined by the length of thecam 50, it'being understood 'that when the cam roll passes beyond thecam 50, the counterweight 39- lifts the lever away from the valve andpermits the coil spring 24 to seat the disk 21 and thereby shut oifsupply of air pressure to the pipe 19. The degree of adjustment of theset screw 42 (Fig. 4) inthe finger 41 is determined by the relationbetween the cam 50 and the frame 18, it being evident that this screwrelieves the cams and cam. drum of the strain to which they would besubjected if the screws and frame did not support the counterweights.

The series of cams 50 which eriodically rock the levers 35 are suitablyand removably secured by bolts in grooves 51 formed on the inner surfaceof a stationary drum 52 whose lower end is provided with a bearing ring53 resting in an upwardly opening anroll 49 and cam 50 P nular trackway54 supported on legs 55, the lower ends of the latter provided withinwardly extending attaching feet 56 which are bolted or otherwisesecured to the rotary col lar 17 in which the vacuum air and gaschambers are formed. The upper margin of the drum 52 is formed with anannular flange'57 to which arebolted the outer ends of arms 58 of aspider whose central body portion 59 is 'securedto the upper end of thestationary drum 26 by bolts 7 O or the like elements. Thus, the drum 52and cams 50 carried thereby are held stationary while the several valveactuating levers 35, frame 18 and drum supporting track 54 rotate withthe mold carriage as usual. In this manner, the cam rolls 49 areperiodically brought into contact with their corresponding cam sections50 to rock the levers 35 and thereby open the valves for the purposeabove pointed out.

From the above, it is apparent that in operating the glassware formingmachine for the purpose of producing several different types or shapesof ware, cams 50 of different lengths are employed so that the lengthsof the periods during which air'pressure is applied to the finishingmolds. 61 meet the particularrequirem'ents of the particular type ofware. Thus, a relatively large article of ware may be subjected to alongperiod of final blowing by using a long cam 50, while a smaller articlewhich requires much less final blowing air. will be subjected to a lessamount of air pressure than the larger article by employing a shortercam. Obviously, ware roduced under these improved conditions will be ofbetter uality than ware produced under the old and more orlessobjectionable conditions pointed out heretofore.

Modifications may be resorted to within the spirit and scope of theappended claims.

What I claim is:

1. In a glassware forming machine, the combination of a stationarycentral pillar, a

mold carriage rotatably supported thereon,

an annular series of molds on said carriage,

means to'periodically supply air pressure to the molds, air pressurecontrol valves individual to the molds, valve actuating leversindividual to the'valves, means normally yieldinglyholding the leversout of operative engagement with the valves, and cams individual to themolds to rock the levers at regular intervals and thereby open thevalves to apply air pressure to the mold.

2. In a glassware forming machine, the combination of-a stationarycentral pillar, a mold carriage rotatably supported thereon, an annularseries of molds on said carriage, means to periodically supply airpressure to the molds, air pressure control valves individual. to themolds, valve actuating levers individual to the valves, 'means normallyyieldingly holding .the levers out of operavidual to the molds to rockthe levers at regular intervals and thereby open the valves to apply airpressure to the mold, and means whereby the cams may be removed andreplaced independently ofeach other.

3. In a glassware forming machine, the combination of a stationarycentral pillar, 'a mold carriage rotatably supported thereon, an annularseries of molds on said carriage, means to periodically apply airpressure to the molds, a stationary cam support mounted on said pillar,cams on said support individual to the molds, and mechanisms individualto the molds and operable at regular intervals by said cams to controland re ulate the lengths of the periods of applicatlon of air pressureto the molds.

4. In a glassware forming machine, the combination of a stationarycentral pillar, a mold carriage rotatably supported thereon, an annularseries of molds on said carriage, means to periodically apply airpressure to the molds, a stationary cam drum mounted on said pillar,cams on said drum individual tothe molds, mechanisms individual to themolds and operable at regular intervals by said cams to control andregulate the lengths of the periods of application .of air pressure tothe molds, each of said mechanisms including a valve, yielding meansnormally holding the valve closed, a valve actuating lever mounted forvertical swinging movement into and out of operative engagement withsaid valve, yielding means normally holding the lever out of engagementwith the valve, and means carried by said lever and periodically engagedby one of said cams to rock the lever and 0 en said valve. I

5. n a glassware forming machine, the combination of a stationarycentral pillar, a

mold carriage rotatably supported thereon an annular series of molds onsaid carriage, means to periodically apply air pressure to the molds,air pressure control valves individual to the molds, cam actuated leversindividual to the valves for alternately opening and closing the latter,a circular cam drum arranged above said pillar, and cams carried by saiddrum, said cams being individual to the molds and adapted to actuate thevalve control levers at regularintervals. f

' 6. In aglassware forming machine, the combination of a stationarycentral pillar, a mold carriage rotat'ably supported thereon, an annularseries of moldsson said carriage, means to periodically apply airpressure to the molds, 'air pressure control valves individual to themolds, cam actuated levers individual to the valves for alternatelyopeningand closing the latter, a circular cam drum arranged above saidpillar, cams carried by said drum, said cams being individual to themolds and adapted to actuate the valve control levers at regularintervals, and counterweights individual to the valve actuating levers,normally and yieldingly holding said levers out of engagement withcorresponding air pressure control valves.

7. In a glassware forming machine, the combination of a stationarycentral pillar, a 'mold carriage rotatably supported thereon, an annularseries of molds 'on said carriage, means to periodically apply airpressure to the molds, air pressure control valves individual to themolds, cam actuated levers individual to the valves for alternatelyopening and closing the latter, a circular cam drum arranged above saidpillar, cams carried by said drum, said cams being individual to themolds and adapted to actuate the valve control levers at regularintervals, and means separably interconnecting the cams and cam drumwhereby said cams may be readily removed or adjusted.

8. In a glassware forming machine, a rotary mold carriage, an annularseries of finishing molds thereon, means tosupply air" pressure to saidmolds to blow articles to their final form therein, means individual .to

.molds for controlling the length of the periods of application of airpressure thereto, said last named means including air pressure controlvalves individual to the molds, a set of cams. including a separate camfor each mold, said cams arranged in a vertical series above saidvalves, and valve actuating levers individual to the valves and cams andoperable by said cams.

9. In a glassware formin machine, a rotary mold carriage, an annu arseries of finishing molds thereon, means to supply air pressure to saidmolds to blow articles to their final form therein, air pressure controlvalves individual to the molds, a cam drum, cams on the drum including aseparate cam for each mold, said cams operable to individually actuatethe valves, and removable means connecting the cams and drum whereby thecams may be individually adjusted circummechanism independently of theothers.

Signed at Montreal, in the Province of Quebec, this 16th day of March,1928.

LOUIS HORACE MORIN.

